REDUCTION OF HARMONICS IN SOLAR POWER GENERATION SYSTEM BY USING FIVE LEVEL INVERTER

A five-level inverter implemented in this paper for injecting of the real power of the solar power into the grid to eliminate the switching losses, harmonic distortion, and electromagnetic interference caused by the switching operation. Five level inverter can be designed with combination of two dc capacitors which are connected to the dual-buck converter and single phase H-bride converter. The output voltage of the dual-buck converter supplies to the full-bridge inverter. The switches of the full-bridge inverter are triggered in low frequency synchronous with the utility voltage to convert the output voltage of the dual-buck converter to a five-level ac voltage. The output current of the five-level inverter is controlled by producing a sinusoidal current in phase with the utility voltage to inject into the grid this system can be designed by matlab/simulink software.